package com.example.yin.service;

import org.springframework.web.multipart.MultipartFile;

import java.io.OutputStream;
import java.util.List;

public interface OssService {
    public String uploadFile(MultipartFile file,String filename);

    public List<String> listObjects();

    public boolean doesObjectExist(String fileName);

    public void exportFile(OutputStream os, String objectName);
}
